Right now the West dominates world trade and many people in other parts of the world are exploited to meet needs in this market.
If we accept this as a model for trade, then there is nothing stopping the coin flipping and other markets – such as China – becoming the main market and Western workers being exploited to service that market.
The only way to ensure that you will continue to be paid a fair wage for your work, is to ensure (while you are lucky enough to have the power to do so) that everybody is paid a fair wage, regardless of where they live.